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bccafa26 | 1 | /* Top level of GCC compilers (cc1, cc1plus, etc.) |
b86e0f5c | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3d7c33fe | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
4 | Free Software Foundation, Inc. | |
3bcb26d1 | 5 | |
f12b58b3 | 6 | This file is part of GCC. |
3bcb26d1 | 7 | |
f12b58b3 | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2, or (at your option) any later | |
11 | version. | |
3bcb26d1 | 12 | |
f12b58b3 | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
3bcb26d1 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
f12b58b3 | 19 | along with GCC; see the file COPYING. If not, write to the Free |
67ce556b | 20 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
3bcb26d1 | 22 | |
3bcb26d1 | 23 | /* This is the top level of cc1/c++. |
24 | It parses command args, opens files, invokes the various passes | |
25 | in the proper order, and counts the time used by each. | |
26 | Error messages and low-level interface to malloc also handled here. */ | |
27 | ||
28 | #include "config.h" | |
405711de | 29 | #undef FLOAT /* This is for hpux. They should change hpux. */ |
30 | #undef FFS /* Some systems define this in param.h. */ | |
31 | #include "system.h" | |
805e22b2 | 32 | #include "coretypes.h" |
33 | #include "tm.h" | |
3bcb26d1 | 34 | #include <signal.h> |
ad87de1e | 35 | |
36 | #ifdef HAVE_SYS_RESOURCE_H | |
37 | # include <sys/resource.h> | |
38 | #endif | |
39 | ||
40 | #ifdef HAVE_SYS_TIMES_H | |
41 | # include <sys/times.h> | |
0dfdfa9f | 42 | #endif |
3bcb26d1 | 43 | |
de269355 | 44 | #include "line-map.h" |
3bcb26d1 | 45 | #include "input.h" |
46 | #include "tree.h" | |
af225e7d | 47 | #include "version.h" |
3bcb26d1 | 48 | #include "rtl.h" |
7953c610 | 49 | #include "tm_p.h" |
3bcb26d1 | 50 | #include "flags.h" |
51 | #include "insn-attr.h" | |
997d68fe | 52 | #include "insn-config.h" |
ba38e12b | 53 | #include "insn-flags.h" |
3e9f1237 | 54 | #include "hard-reg-set.h" |
997d68fe | 55 | #include "recog.h" |
1ff68c01 | 56 | #include "output.h" |
037a5228 | 57 | #include "except.h" |
0a893c29 | 58 | #include "function.h" |
c3ab7bd5 | 59 | #include "toplev.h" |
74273693 | 60 | #include "expr.h" |
e81f50db | 61 | #include "basic-block.h" |
be2828ce | 62 | #include "intl.h" |
05513b45 | 63 | #include "ggc.h" |
e5bd1365 | 64 | #include "graph.h" |
5d0e87b7 | 65 | #include "regs.h" |
74d2af64 | 66 | #include "timevar.h" |
990339dd | 67 | #include "diagnostic.h" |
9a33a2e8 | 68 | #include "params.h" |
75eb327c | 69 | #include "reload.h" |
8a34c73b | 70 | #include "dwarf2asm.h" |
fb0c0ea7 | 71 | #include "integrate.h" |
aa870c1b | 72 | #include "real.h" |
b896d81b | 73 | #include "debug.h" |
2cb4ac60 | 74 | #include "target.h" |
b0278d39 | 75 | #include "langhooks.h" |
29cc5ce8 | 76 | #include "cfglayout.h" |
862be747 | 77 | #include "cfgloop.h" |
b197fbcf | 78 | #include "hosthooks.h" |
28992b23 | 79 | #include "cgraph.h" |
5457b645 | 80 | #include "opts.h" |
a0ed384d | 81 | #include "coverage.h" |
1c6a7b8c | 82 | #include "value-prof.h" |
15ac28e3 | 83 | #include "alloc-pool.h" |
e68ba323 | 84 | #include "tree-mudflap.h" |
e3a24b9a | 85 | |
744d3441 | 86 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
87 | #include "dwarf2out.h" | |
88 | #endif | |
89 | ||
02da6382 | 90 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
744d3441 | 91 | #include "dbxout.h" |
92 | #endif | |
93 | ||
94 | #ifdef SDB_DEBUGGING_INFO | |
95 | #include "sdbout.h" | |
96 | #endif | |
397c7bc7 | 97 | |
98 | #ifdef XCOFF_DEBUGGING_INFO | |
99 | #include "xcoffout.h" /* Needed for external data | |
100 | declarations for e.g. AIX 4.x. */ | |
101 | #endif | |
03414cfb | 102 | |
4838a8b6 | 103 | static void general_init (const char *); |
7237deda | 104 | static void do_compile (void); |
105 | static void process_options (void); | |
106 | static void backend_init (void); | |
107 | static int lang_dependent_init (const char *); | |
108 | static void init_asm_output (const char *); | |
109 | static void finalize (void); | |
110 | ||
7237deda | 111 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
112 | static void setup_core_dumping (void); | |
113 | static void compile_file (void); | |
7237deda | 114 | |
1c542e4c | 115 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
116 | static int set_yydebug; | |
117 | ||
03bde601 | 118 | /* True if we don't need a backend (e.g. preprocessing only). */ |
119 | static bool no_backend; | |
120 | ||
e87e2aa9 | 121 | /* Length of line when printing switch values. */ |
122 | #define MAX_LINE 75 | |
123 | ||
3bcb26d1 | 124 | /* Name of program invoked, sans directories. */ |
125 | ||
9ea83430 | 126 | const char *progname; |
3bcb26d1 | 127 | |
4838a8b6 | 128 | /* Copy of argument vector to toplev_main. */ |
129 | static const char **save_argv; | |
03414cfb | 130 | |
3bcb26d1 | 131 | /* Name of top-level original source file (what was input to cpp). |
132 | This comes from the #-command at the beginning of the actual input. | |
133 | If there isn't any there, then this is the cc1 input file name. */ | |
134 | ||
e772a198 | 135 | const char *main_input_filename; |
3bcb26d1 | 136 | |
fdfe4b3f | 137 | #ifndef USE_MAPPED_LOCATION |
138 | location_t unknown_location = { NULL, 0 }; | |
139 | #endif | |
140 | ||
ad469377 | 141 | /* Used to enable -fvar-tracking, -fweb and -frename-registers according |
142 | to optimize and default_debug_hooks in process_options (). */ | |
472cd78a | 143 | #define AUTODETECT_VALUE 2 |
ad469377 | 144 | |
5a8a92a0 | 145 | /* Current position in real source file. */ |
3bcb26d1 | 146 | |
5a8a92a0 | 147 | location_t input_location; |
3bcb26d1 | 148 | |
ceec9c13 | 149 | struct line_maps line_table; |
150 | ||
9e519b97 | 151 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
152 | int no_new_pseudos; | |
153 | ||
3bcb26d1 | 154 | /* Stack of currently pending input files. */ |
155 | ||
156 | struct file_stack *input_file_stack; | |
157 | ||
158 | /* Incremented on each change to input_file_stack. */ | |
159 | int input_file_stack_tick; | |
160 | ||
18a3d34c | 161 | /* Record of input_file_stack at each tick. */ |
162 | typedef struct file_stack *fs_p; | |
163 | DEF_VEC_P(fs_p); | |
164 | DEF_VEC_ALLOC_P(fs_p,heap); | |
165 | static VEC(fs_p,heap) *input_file_stack_history; | |
166 | ||
167 | /* Whether input_file_stack has been restored to a previous state (in | |
168 | which case there should be no more pushing). */ | |
169 | static bool input_file_stack_restored; | |
170 | ||
3bcb26d1 | 171 | /* Name to use as base of names for dump output files. */ |
172 | ||
951f0f62 | 173 | const char *dump_base_name; |
3bcb26d1 | 174 | |
d036315f | 175 | /* Name to use as a base for auxiliary output files. */ |
176 | ||
e690b385 | 177 | const char *aux_base_name; |
d036315f | 178 | |
3bcb26d1 | 179 | /* Bit flags that specify the machine subtype we are compiling for. |
180 | Bits are tested using macros TARGET_... defined in the tm.h file | |
181 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
182 | ||
183 | extern int target_flags; | |
184 | ||
5153cc32 | 185 | /* A mask of target_flags that includes bit X if X was set or cleared |
186 | on the command line. */ | |
187 | ||
188 | int target_flags_explicit; | |
189 | ||
b896d81b | 190 | /* Debug hooks - dependent upon command line options. */ |
191 | ||
b0e56fb1 | 192 | const struct gcc_debug_hooks *debug_hooks; |
b896d81b | 193 | |
ad469377 | 194 | /* Debug hooks - target default. */ |
195 | ||
196 | static const struct gcc_debug_hooks *default_debug_hooks; | |
197 | ||
713a4057 | 198 | /* Other flags saying which kinds of debugging dump have been requested. */ |
199 | ||
200 | int rtl_dump_and_exit; | |
201 | int flag_print_asm_name; | |
3eaf50a4 | 202 | enum graph_dump_types graph_dump_format; |
3bcb26d1 | 203 | |
204 | /* Name for output file of assembly code, specified with -o. */ | |
205 | ||
e690b385 | 206 | const char *asm_file_name; |
3bcb26d1 | 207 | |
3bcb26d1 | 208 | /* Nonzero means do optimizations. -O. |
209 | Particular numeric values stand for particular amounts of optimization; | |
210 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
211 | ones are not controlled directly by this variable. Instead, they are | |
212 | controlled by individual `flag_...' variables that are defaulted | |
213 | based on this variable. */ | |
214 | ||
215 | int optimize = 0; | |
216 | ||
57361983 | 217 | /* Nonzero means optimize for size. -Os. |
f712a0dc | 218 | The only valid values are zero and nonzero. When optimize_size is |
219 | nonzero, optimize defaults to 2, but certain individual code | |
57361983 | 220 | bloating optimizations are disabled. */ |
221 | ||
222 | int optimize_size = 0; | |
223 | ||
d0309f39 | 224 | /* The FUNCTION_DECL for the function currently being compiled, |
225 | or 0 if between functions. */ | |
226 | tree current_function_decl; | |
227 | ||
2d754264 | 228 | /* Set to the FUNC_BEGIN label of the current function, or NULL |
d0309f39 | 229 | if none. */ |
2d754264 | 230 | const char * current_function_func_begin_label; |
d0309f39 | 231 | |
3bcb26d1 | 232 | /* Temporarily suppress certain warnings. |
233 | This is set while reading code from a system header file. */ | |
234 | ||
235 | int in_system_header = 0; | |
236 | ||
a8b24921 | 237 | /* Nonzero means to collect statistics which might be expensive |
518796ad | 238 | and to print them when we are done. */ |
239 | int flag_detailed_statistics = 0; | |
240 | ||
81d47035 | 241 | /* A random sequence of characters, unless overridden by user. */ |
b80f1d67 | 242 | const char *flag_random_seed; |
243 | ||
244 | /* A local time stamp derived from the time of compilation. It will be | |
245 | zero if the system cannot provide a time. It will be -1u, if the | |
246 | user has specified a particular random seed. */ | |
247 | unsigned local_tick; | |
248 | ||
3bcb26d1 | 249 | /* -f flags. */ |
250 | ||
251 | /* Nonzero means `char' should be signed. */ | |
252 | ||
253 | int flag_signed_char; | |
254 | ||
5bf3fee3 | 255 | /* Nonzero means give an enum type only as many bytes as it needs. A value |
256 | of 2 means it has not yet been initialized. */ | |
3bcb26d1 | 257 | |
258 | int flag_short_enums; | |
259 | ||
557a6af6 | 260 | /* Nonzero if structures and unions should be returned in memory. |
261 | ||
262 | This should only be defined if compatibility with another compiler or | |
263 | with an ABI is needed, because it results in slower code. */ | |
264 | ||
265 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
266 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
267 | #endif | |
268 | ||
3bcb26d1 | 269 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
270 | ||
557a6af6 | 271 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
3bcb26d1 | 272 | |
27bc6aee | 273 | /* 0 means straightforward implementation of complex divide acceptable. |
274 | 1 means wide ranges of inputs must work for complex divide. | |
0dfc45b5 | 275 | 2 means C99-like requirements for complex multiply and divide. */ |
27bc6aee | 276 | |
45b9d334 | 277 | int flag_complex_method = 1; |
27bc6aee | 278 | |
c31da6e7 | 279 | /* Nonzero means that we don't want inlining by virtue of -fno-inline, |
280 | not just because the tree inliner turned us off. */ | |
281 | ||
a14bc987 | 282 | int flag_really_no_inline = 2; |
c31da6e7 | 283 | |
3bcb26d1 | 284 | /* Nonzero means we should be saving declaration info into a .X file. */ |
285 | ||
286 | int flag_gen_aux_info = 0; | |
287 | ||
e3a24b9a | 288 | /* Specified name of aux-info file. */ |
289 | ||
e690b385 | 290 | const char *aux_info_file_name; |
e3a24b9a | 291 | |
c3ce66b0 | 292 | /* Nonzero if we are compiling code for a shared library, zero for |
293 | executable. */ | |
294 | ||
295 | int flag_shlib; | |
296 | ||
66575a0b | 297 | /* Generate code for GNU or NeXT Objective-C runtime environment. */ |
298 | ||
299 | #ifdef NEXT_OBJC_RUNTIME | |
300 | int flag_next_runtime = 1; | |
301 | #else | |
302 | int flag_next_runtime = 0; | |
303 | #endif | |
304 | ||
2a6f0f81 | 305 | /* Set to the default thread-local storage (tls) model to use. */ |
306 | ||
d595210a | 307 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
2a6f0f81 | 308 | |
3bcb26d1 | 309 | /* Nonzero means change certain warnings into errors. |
310 | Usually these are warnings about failure to conform to some standard. */ | |
311 | ||
312 | int flag_pedantic_errors = 0; | |
313 | ||
e87e2aa9 | 314 | /* -dA causes debug commentary information to be produced in |
315 | the generated assembly code (to make it more readable). This option | |
316 | is generally only of use to those who actually need to read the | |
317 | generated assembly code (perhaps while debugging the compiler itself). | |
318 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
319 | to be a catchall for printing debug information in the assembler file. */ | |
320 | ||
321 | int flag_debug_asm = 0; | |
88ef61d1 | 322 | |
af5e5fd0 | 323 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
324 | ||
325 | int flag_dump_rtl_in_asm = 0; | |
326 | ||
8f8ac140 | 327 | /* When non-NULL, indicates that whenever space is allocated on the |
328 | stack, the resulting stack pointer must not pass this | |
329 | address---that is, for stacks that grow downward, the stack pointer | |
330 | must always be greater than or equal to this address; for stacks | |
331 | that grow upward, the stack pointer must be less than this address. | |
332 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
333 | the support provided depends on the backend. */ | |
334 | rtx stack_limit_rtx; | |
335 | ||
5923a5e7 | 336 | /* Nonzero if we should track variables. When |
472cd78a | 337 | flag_var_tracking == AUTODETECT_VALUE it will be set according |
5923a5e7 | 338 | to optimize, debug_info_level and debug_hooks in process_options (). */ |
472cd78a | 339 | int flag_var_tracking = AUTODETECT_VALUE; |
5923a5e7 | 340 | |
065efcb1 | 341 | /* True if the user has tagged the function with the 'section' |
342 | attribute. */ | |
343 | ||
344 | bool user_defined_section_attribute = false; | |
345 | ||
89a75961 | 346 | /* Values of the -falign-* flags: how much to align labels in code. |
347 | 0 means `use default', 1 means `don't align'. | |
61e95947 | 348 | For each variable, there is an _log variant which is the power |
349 | of two not less than the variable, for .align output. */ | |
350 | ||
61e95947 | 351 | int align_loops_log; |
93429286 | 352 | int align_loops_max_skip; |
61e95947 | 353 | int align_jumps_log; |
93429286 | 354 | int align_jumps_max_skip; |
61e95947 | 355 | int align_labels_log; |
93429286 | 356 | int align_labels_max_skip; |
61e95947 | 357 | int align_functions_log; |
358 | ||
fc5cb4c0 | 359 | /* Like align_functions_log above, but used by front-ends to force the |
360 | minimum function alignment. Zero means no alignment is forced. */ | |
361 | int force_align_functions_log; | |
362 | ||
8ace789a | 363 | typedef struct |
364 | { | |
33b57a7b | 365 | const char *const string; |
366 | int *const variable; | |
367 | const int on_value; | |
8ace789a | 368 | } |
369 | lang_independent_options; | |
370 | ||
3541e113 | 371 | /* Nonzero if subexpressions must be evaluated from left-to-right. */ |
372 | int flag_evaluation_order = 0; | |
373 | ||
95c4b02a | 374 | /* The user symbol prefix after having resolved same. */ |
951f0f62 | 375 | const char *user_label_prefix; |
95c4b02a | 376 | |
9a33a2e8 | 377 | static const param_info lang_independent_params[] = { |
1d8a53f4 | 378 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ |
07804af5 | 379 | { OPTION, DEFAULT, false, MIN, MAX, HELP }, |
9a33a2e8 | 380 | #include "params.def" |
381 | #undef DEFPARAM | |
07804af5 | 382 | { NULL, 0, false, 0, 0, NULL } |
9a33a2e8 | 383 | }; |
384 | ||
3bcb26d1 | 385 | /* Output files for assembler code (real compiler output) |
386 | and debugging dumps. */ | |
387 | ||
388 | FILE *asm_out_file; | |
389 | FILE *aux_info_file; | |
450d042a | 390 | FILE *dump_file = NULL; |
04625615 | 391 | const char *dump_file_name; |
3bcb26d1 | 392 | |
e7aa92b2 | 393 | /* The current working directory of a translation. It's generally the |
394 | directory from which compilation was initiated, but a preprocessed | |
395 | file may specify the original directory in which it was | |
396 | created. */ | |
397 | ||
398 | static const char *src_pwd; | |
399 | ||
400 | /* Initialize src_pwd with the given string, and return true. If it | |
401 | was already initialized, return false. As a special case, it may | |
402 | be called with a NULL argument to test whether src_pwd has NOT been | |
403 | initialized yet. */ | |
404 | ||
405 | bool | |
406 | set_src_pwd (const char *pwd) | |
407 | { | |
408 | if (src_pwd) | |
dc1dd09b | 409 | { |
410 | if (strcmp (src_pwd, pwd) == 0) | |
411 | return true; | |
412 | else | |
413 | return false; | |
414 | } | |
e7aa92b2 | 415 | |
416 | src_pwd = xstrdup (pwd); | |
417 | return true; | |
418 | } | |
419 | ||
420 | /* Return the directory from which the translation unit was initiated, | |
421 | in case set_src_pwd() was not called before to assign it a | |
422 | different value. */ | |
423 | ||
424 | const char * | |
425 | get_src_pwd (void) | |
426 | { | |
427 | if (! src_pwd) | |
8bc418a1 | 428 | { |
429 | src_pwd = getpwd (); | |
430 | if (!src_pwd) | |
431 | src_pwd = "."; | |
432 | } | |
e7aa92b2 | 433 | |
434 | return src_pwd; | |
435 | } | |
436 | ||
53d712d9 | 437 | /* Called when the start of a function definition is parsed, |
438 | this function prints on stderr the name of the function. */ | |
439 | void | |
440 | announce_function (tree decl) | |
441 | { | |
442 | if (!quiet_flag) | |
443 | { | |
444 | if (rtl_dump_and_exit) | |
c907c5b1 | 445 | fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); |
53d712d9 | 446 | else |
c907c5b1 | 447 | fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2)); |
53d712d9 | 448 | fflush (stderr); |
449 | pp_needs_newline (global_dc->printer) = true; | |
450 | diagnostic_set_last_function (global_dc); | |
451 | } | |
452 | } | |
453 | ||
b80f1d67 | 454 | /* Set up a default flag_random_seed and local_tick, unless the user |
455 | already specified one. */ | |
456 | ||
457 | static void | |
458 | randomize (void) | |
459 | { | |
460 | if (!flag_random_seed) | |
461 | { | |
462 | unsigned HOST_WIDE_INT value; | |
463 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
7e614678 | 464 | |
b80f1d67 | 465 | /* Get some more or less random data. */ |
466 | #ifdef HAVE_GETTIMEOFDAY | |
467 | { | |
468 | struct timeval tv; | |
7e614678 | 469 | |
b80f1d67 | 470 | gettimeofday (&tv, NULL); |
471 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
472 | } | |
473 | #else | |
474 | { | |
c48e08ab | 475 | time_t now = time (NULL); |
b80f1d67 | 476 | |
477 | if (now != (time_t)-1) | |
478 | local_tick = (unsigned) now; | |
479 | } | |
480 | #endif | |
481 | value = local_tick ^ getpid (); | |
7e614678 | 482 | |
b80f1d67 | 483 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); |
484 | flag_random_seed = random_seed; | |
485 | } | |
317ddc71 | 486 | else if (!local_tick) |
b80f1d67 | 487 | local_tick = -1; |
488 | } | |
489 | ||
490 | ||
4a665e20 | 491 | /* Decode the string P as an integral parameter. |
492 | If the string is indeed an integer return its numeric value else | |
caeb0249 | 493 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
89a75961 | 494 | If PNAME is zero just return DEFVAL, do not call error. */ |
495 | ||
4a665e20 | 496 | int |
7237deda | 497 | read_integral_parameter (const char *p, const char *pname, const int defval) |
4a665e20 | 498 | { |
caeb0249 | 499 | const char *endp = p; |
4a665e20 | 500 | |
501 | while (*endp) | |
502 | { | |
66a33570 | 503 | if (ISDIGIT (*endp)) |
4a665e20 | 504 | endp++; |
505 | else | |
caeb0249 | 506 | break; |
507 | } | |
508 | ||
509 | if (*endp != 0) | |
510 | { | |
511 | if (pname != 0) | |
eb586f2c | 512 | error ("invalid option argument %qs", pname); |
caeb0249 | 513 | return defval; |
4a665e20 | 514 | } |
515 | ||
516 | return atoi (p); | |
517 | } | |
3bcb26d1 | 518 | |
eb59413a | 519 | /* When compiling with a recent enough GCC, we use the GNU C "extern inline" |
520 | for floor_log2 and exact_log2; see toplev.h. That construct, however, | |
521 | conflicts with the ISO C++ One Definition Rule. */ | |
522 | ||
cd62e7b6 | 523 | #if GCC_VERSION < 3004 || !defined (__cplusplus) |
eb59413a | 524 | |
2f8c3981 | 525 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
05c09cb8 | 526 | If X is 0, return -1. */ |
3bcb26d1 | 527 | |
528 | int | |
05c09cb8 | 529 | floor_log2 (unsigned HOST_WIDE_INT x) |
3bcb26d1 | 530 | { |
05c09cb8 | 531 | int t = 0; |
532 | ||
2f8c3981 | 533 | if (x == 0) |
3bcb26d1 | 534 | return -1; |
05c09cb8 | 535 | |
536 | #ifdef CLZ_HWI | |
537 | t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); | |
538 | #else | |
539 | if (HOST_BITS_PER_WIDE_INT > 64) | |
5babc3bf | 540 | if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) |
2f8c3981 | 541 | t += 64; |
05c09cb8 | 542 | if (HOST_BITS_PER_WIDE_INT > 32) |
5babc3bf | 543 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) |
2f8c3981 | 544 | t += 32; |
5babc3bf | 545 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) |
2f8c3981 | 546 | t += 16; |
5babc3bf | 547 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) |
2f8c3981 | 548 | t += 8; |
5babc3bf | 549 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) |
2f8c3981 | 550 | t += 4; |
5babc3bf | 551 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) |
2f8c3981 | 552 | t += 2; |
5babc3bf | 553 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) |
2f8c3981 | 554 | t += 1; |
05c09cb8 | 555 | #endif |
556 | ||
2f8c3981 | 557 | return t; |
3bcb26d1 | 558 | } |
559 | ||
2f8c3981 | 560 | /* Return the logarithm of X, base 2, considering X unsigned, |
05c09cb8 | 561 | if X is a power of 2. Otherwise, returns -1. */ |
3bcb26d1 | 562 | |
563 | int | |
05c09cb8 | 564 | exact_log2 (unsigned HOST_WIDE_INT x) |
3bcb26d1 | 565 | { |
05c09cb8 | 566 | if (x != (x & -x)) |
2f8c3981 | 567 | return -1; |
05c09cb8 | 568 | #ifdef CTZ_HWI |
569 | return x ? CTZ_HWI (x) : -1; | |
570 | #else | |
571 | return floor_log2 (x); | |
572 | #endif | |
3bcb26d1 | 573 | } |
574 | ||
cd62e7b6 | 575 | #endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */ |
eb59413a | 576 | |
b9b90cce | 577 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
3a2aee0e | 578 | into ICE messages, which is much more user friendly. In case the |
579 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
3bcb26d1 | 580 | |
581 | static void | |
7237deda | 582 | crash_signal (int signo) |
3bcb26d1 | 583 | { |
3a2aee0e | 584 | signal (signo, SIG_DFL); |
c706a9d9 | 585 | |
586 | /* If we crashed while processing an ASM statement, then be a little more | |
587 | graceful. It's most likely the user's fault. */ | |
588 | if (this_is_asm_operands) | |
589 | { | |
590 | output_operand_lossage ("unrecoverable error"); | |
591 | exit (FATAL_EXIT_CODE); | |
592 | } | |
593 | ||
59b7a777 | 594 | internal_error ("%s", strsignal (signo)); |
3bcb26d1 | 595 | } |
596 | ||
5f07bab0 | 597 | /* Arrange to dump core on error. (The regular error message is still |
598 | printed first, except in the case of abort().) */ | |
599 | ||
600 | static void | |
7237deda | 601 | setup_core_dumping (void) |
5f07bab0 | 602 | { |
603 | #ifdef SIGABRT | |
604 | signal (SIGABRT, SIG_DFL); | |
605 | #endif | |
606 | #if defined(HAVE_SETRLIMIT) | |
607 | { | |
608 | struct rlimit rlim; | |
609 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
d07c9932 | 610 | fatal_error ("getting core file size maximum limit: %m"); |
5f07bab0 | 611 | rlim.rlim_cur = rlim.rlim_max; |
612 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
d07c9932 | 613 | fatal_error ("setting core file size limit to maximum: %m"); |
5f07bab0 | 614 | } |
615 | #endif | |
616 | diagnostic_abort_on_error (global_dc); | |
617 | } | |
618 | ||
619 | ||
3bcb26d1 | 620 | /* Strip off a legitimate source ending from the input string NAME of |
29db5b69 | 621 | length LEN. Rather than having to know the names used by all of |
0e497de6 | 622 | our front ends, we strip off an ending of a period followed by |
89a75961 | 623 | up to five characters. (Java uses ".class".) */ |
3bcb26d1 | 624 | |
625 | void | |
7237deda | 626 | strip_off_ending (char *name, int len) |
3bcb26d1 | 627 | { |
0e497de6 | 628 | int i; |
6c34d0c2 | 629 | for (i = 2; i < 6 && len > i; i++) |
0e497de6 | 630 | { |
631 | if (name[len - i] == '.') | |
632 | { | |
633 | name[len - i] = '\0'; | |
634 | break; | |
635 | } | |
636 | } | |
3bcb26d1 | 637 | } |
638 | ||
1ca05b7f | 639 | /* Output a quoted string. */ |
a92771b8 | 640 | |
1ca05b7f | 641 | void |
7237deda | 642 | output_quoted_string (FILE *asm_file, const char *string) |
1ca05b7f | 643 | { |
0dbd1c74 | 644 | #ifdef OUTPUT_QUOTED_STRING |
645 | OUTPUT_QUOTED_STRING (asm_file, string); | |
646 | #else | |
1ca05b7f | 647 | char c; |
648 | ||
649 | putc ('\"', asm_file); | |
650 | while ((c = *string++) != 0) | |
651 | { | |
686ddf2e | 652 | if (ISPRINT (c)) |
653 | { | |
654 | if (c == '\"' || c == '\\') | |
655 | putc ('\\', asm_file); | |
656 | putc (c, asm_file); | |
657 | } | |
658 | else | |
6e957326 | 659 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
1ca05b7f | 660 | } |
661 | putc ('\"', asm_file); | |
0dbd1c74 | 662 | #endif |
1ca05b7f | 663 | } |
664 | ||
3bcb26d1 | 665 | /* Output a file name in the form wanted by System V. */ |
666 | ||
667 | void | |
7237deda | 668 | output_file_directive (FILE *asm_file, const char *input_name) |
3bcb26d1 | 669 | { |
df89076c | 670 | int len; |
671 | const char *na; | |
7e614678 | 672 | |
df89076c | 673 | if (input_name == NULL) |
674 | input_name = "<stdin>"; | |
675 | ||
676 | len = strlen (input_name); | |
677 | na = input_name + len; | |
3bcb26d1 | 678 | |
679 | /* NA gets INPUT_NAME sans directory names. */ | |
680 | while (na > input_name) | |
681 | { | |
11a8d03b | 682 | if (IS_DIR_SEPARATOR (na[-1])) |
b1157638 | 683 | break; |
3bcb26d1 | 684 | na--; |
685 | } | |
686 | ||
3bcb26d1 | 687 | #ifdef ASM_OUTPUT_SOURCE_FILENAME |
688 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
689 | #else | |
1ca05b7f | 690 | fprintf (asm_file, "\t.file\t"); |
691 | output_quoted_string (asm_file, na); | |
692 | fputc ('\n', asm_file); | |
3bcb26d1 | 693 | #endif |
3bcb26d1 | 694 | } |
03414cfb | 695 | |
c131e678 | 696 | /* A subroutine of wrapup_global_declarations. We've come to the end of |
697 | the compilation unit. All deferred variables should be undeferred, | |
698 | and all incomplete decls should be finalized. */ | |
699 | ||
700 | void | |
701 | wrapup_global_declaration_1 (tree decl) | |
702 | { | |
703 | /* We're not deferring this any longer. Assignment is conditional to | |
704 | avoid needlessly dirtying PCH pages. */ | |
705 | if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
706 | && DECL_DEFER_OUTPUT (decl) != 0) | |
707 | DECL_DEFER_OUTPUT (decl) = 0; | |
708 | ||
709 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
710 | lang_hooks.finish_incomplete_decl (decl); | |
711 | } | |
712 | ||
713 | /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
714 | needs to be output. Return true if it is output. */ | |
715 | ||
716 | bool | |
717 | wrapup_global_declaration_2 (tree decl) | |
718 | { | |
719 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
720 | return false; | |
721 | ||
722 | /* Don't write out static consts, unless we still need them. | |
723 | ||
724 | We also keep static consts if not optimizing (for debugging), | |
725 | unless the user specified -fno-keep-static-consts. | |
726 | ??? They might be better written into the debug information. | |
727 | This is possible when using DWARF. | |
728 | ||
729 | A language processor that wants static constants to be always | |
730 | written out (even if it is not used) is responsible for | |
731 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
732 | calls rest_of_decl_compilation from finish_decl. | |
733 | One motivation for this is that is conventional in some | |
734 | environments to write things like: | |
735 | static const char rcsid[] = "... version string ..."; | |
736 | intending to force the string to be in the executable. | |
737 | ||
738 | A language processor that would prefer to have unneeded | |
739 | static constants "optimized away" would just defer writing | |
740 | them out until here. E.g. C++ does this, because static | |
741 | constants are often defined in header files. | |
742 | ||
743 | ??? A tempting alternative (for both C and C++) would be | |
744 | to force a constant to be written if and only if it is | |
745 | defined in a main file, as opposed to an include file. */ | |
746 | ||
747 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
748 | { | |
1d416bd7 | 749 | struct varpool_node *node; |
c131e678 | 750 | bool needed = true; |
1d416bd7 | 751 | node = varpool_node (decl); |
c131e678 | 752 | |
753 | if (node->finalized) | |
754 | needed = false; | |
755 | else if (node->alias) | |
756 | needed = false; | |
757 | else if (!cgraph_global_info_ready | |
758 | && (TREE_USED (decl) | |
759 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
760 | /* needed */; | |
761 | else if (node->needed) | |
762 | /* needed */; | |
763 | else if (DECL_COMDAT (decl)) | |
764 | needed = false; | |
765 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
766 | && (optimize || !flag_keep_static_consts | |
767 | || DECL_ARTIFICIAL (decl))) | |
768 | needed = false; | |
769 | ||
770 | if (needed) | |
771 | { | |
772 | rest_of_decl_compilation (decl, 1, 1); | |
773 | return true; | |
774 | } | |
775 | } | |
776 | ||
777 | return false; | |
778 | } | |
779 | ||
a84da62d | 780 | /* Do any final processing required for the declarations in VEC, of |
781 | which there are LEN. We write out inline functions and variables | |
782 | that have been deferred until this point, but which are required. | |
f712a0dc | 783 | Returns nonzero if anything was put out. */ |
89a75961 | 784 | |
c131e678 | 785 | bool |
7237deda | 786 | wrapup_global_declarations (tree *vec, int len) |
a84da62d | 787 | { |
c131e678 | 788 | bool reconsider, output_something = false; |
a84da62d | 789 | int i; |
a84da62d | 790 | |
791 | for (i = 0; i < len; i++) | |
c131e678 | 792 | wrapup_global_declaration_1 (vec[i]); |
a84da62d | 793 | |
794 | /* Now emit any global variables or functions that we have been | |
795 | putting off. We need to loop in case one of the things emitted | |
796 | here references another one which comes earlier in the list. */ | |
797 | do | |
798 | { | |
c131e678 | 799 | reconsider = false; |
a84da62d | 800 | for (i = 0; i < len; i++) |
c131e678 | 801 | reconsider |= wrapup_global_declaration_2 (vec[i]); |
a84da62d | 802 | if (reconsider) |
c131e678 | 803 | output_something = true; |
a84da62d | 804 | } |
805 | while (reconsider); | |
806 | ||
807 | return output_something; | |
808 | } | |
809 | ||
c131e678 | 810 | /* A subroutine of check_global_declarations. Issue appropriate warnings |
811 | for the global declaration DECL. */ | |
812 | ||
813 | void | |
814 | check_global_declaration_1 (tree decl) | |
815 | { | |
816 | /* Warn about any function declared static but not defined. We don't | |
817 | warn about variables, because many programs have static variables | |
818 | that exist only to get some text into the object file. */ | |
819 | if (TREE_CODE (decl) == FUNCTION_DECL | |
820 | && DECL_INITIAL (decl) == 0 | |
821 | && DECL_EXTERNAL (decl) | |
822 | && ! DECL_ARTIFICIAL (decl) | |
823 | && ! TREE_NO_WARNING (decl) | |
824 | && ! TREE_PUBLIC (decl) | |
825 | && (warn_unused_function | |
826 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
827 | { | |
828 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
829 | pedwarn ("%q+F used but never defined", decl); | |
830 | else | |
831 | warning (0, "%q+F declared %<static%> but never defined", decl); | |
832 | /* This symbol is effectively an "extern" declaration now. */ | |
833 | TREE_PUBLIC (decl) = 1; | |
834 | assemble_external (decl); | |
835 | } | |
836 | ||
837 | /* Warn about static fns or vars defined but not used. */ | |
838 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
839 | /* We don't warn about "static const" variables because the | |
840 | "rcs_id" idiom uses that construction. */ | |
841 | || (warn_unused_variable | |
842 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
843 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
844 | && ! TREE_USED (decl) | |
845 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
846 | to handle multiple external decls in different scopes. */ | |
1563f282 | 847 | && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) |
c131e678 | 848 | && ! DECL_EXTERNAL (decl) |
849 | && ! TREE_PUBLIC (decl) | |
850 | /* A volatile variable might be used in some non-obvious way. */ | |
851 | && ! TREE_THIS_VOLATILE (decl) | |
852 | /* Global register variables must be declared to reserve them. */ | |
853 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
854 | /* Otherwise, ask the language. */ | |
855 | && lang_hooks.decls.warn_unused_global (decl)) | |
856 | warning (0, "%q+D defined but not used", decl); | |
857 | } | |
858 | ||
a84da62d | 859 | /* Issue appropriate warnings for the global declarations in VEC (of |
c131e678 | 860 | which there are LEN). */ |
89a75961 | 861 | |
a84da62d | 862 | void |
7237deda | 863 | check_global_declarations (tree *vec, int len) |
a84da62d | 864 | { |
a84da62d | 865 | int i; |
866 | ||
867 | for (i = 0; i < len; i++) | |
c131e678 | 868 | check_global_declaration_1 (vec[i]); |
869 | } | |
a84da62d | 870 | |
c131e678 | 871 | /* Emit debugging information for all global declarations in VEC. */ |
872 | ||
873 | void | |
874 | emit_debug_global_declarations (tree *vec, int len) | |
875 | { | |
876 | int i; | |
877 | ||
878 | /* Avoid confusing the debug information machinery when there are errors. */ | |
879 | if (errorcount != 0 || sorrycount != 0) | |
880 | return; | |
881 | ||
882 | timevar_push (TV_SYMOUT); | |
883 | for (i = 0; i < len; i++) | |
884 | debug_hooks->global_decl (vec[i]); | |
885 | timevar_pop (TV_SYMOUT); | |
a84da62d | 886 | } |
7291115d | 887 | |
f73a6602 | 888 | /* Warn about a use of an identifier which was marked deprecated. */ |
889 | void | |
890 | warn_deprecated_use (tree node) | |
891 | { | |
892 | if (node == 0 || !warn_deprecated_decl) | |
893 | return; | |
894 | ||
895 | if (DECL_P (node)) | |
fdfe4b3f | 896 | { |
897 | expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
b9e76825 | 898 | warning (OPT_Wdeprecated_declarations, |
bf6fb451 | 899 | "%qD is deprecated (declared at %s:%d)", |
900 | node, xloc.file, xloc.line); | |
fdfe4b3f | 901 | } |
f73a6602 | 902 | else if (TYPE_P (node)) |
903 | { | |
904 | const char *what = NULL; | |
905 | tree decl = TYPE_STUB_DECL (node); | |
906 | ||
ba03a908 | 907 | if (TYPE_NAME (node)) |
908 | { | |
909 | if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
910 | what = IDENTIFIER_POINTER (TYPE_NAME (node)); | |
911 | else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL | |
912 | && DECL_NAME (TYPE_NAME (node))) | |
913 | what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); | |
914 | } | |
f73a6602 | 915 | |
fdfe4b3f | 916 | if (decl) |
f73a6602 | 917 | { |
fdfe4b3f | 918 | expanded_location xloc |
919 | = expand_location (DECL_SOURCE_LOCATION (decl)); | |
920 | if (what) | |
b9e76825 | 921 | warning (OPT_Wdeprecated_declarations, |
922 | "%qs is deprecated (declared at %s:%d)", what, | |
923 | xloc.file, xloc.line); | |
f73a6602 | 924 | else |
b9e76825 | 925 | warning (OPT_Wdeprecated_declarations, |
926 | "type is deprecated (declared at %s:%d)", | |
fdfe4b3f | 927 | xloc.file, xloc.line); |
f73a6602 | 928 | } |
f73a6602 | 929 | else |
fdfe4b3f | 930 | { |
931 | if (what) | |
b9e76825 | 932 | warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what); |
ba03a908 | 933 | else |
b9e76825 | 934 | warning (OPT_Wdeprecated_declarations, "type is deprecated"); |
fdfe4b3f | 935 | } |
f73a6602 | 936 | } |
937 | } | |
938 | ||
bca5a169 | 939 | /* Save the current INPUT_LOCATION on the top entry in the |
25c66e49 | 940 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the |
bca5a169 | 941 | INPUT_LOCATION accordingly. */ |
25c66e49 | 942 | |
943 | void | |
fdfe4b3f | 944 | #ifdef USE_MAPPED_LOCATION |
945 | push_srcloc (location_t fline) | |
946 | #else | |
7237deda | 947 | push_srcloc (const char *file, int line) |
fdfe4b3f | 948 | #endif |
25c66e49 | 949 | { |
950 | struct file_stack *fs; | |
951 | ||
18a3d34c | 952 | gcc_assert (!input_file_stack_restored); |
953 | if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1)) | |
954 | sorry ("GCC supports only %d input file changes", input_file_stack_tick); | |
955 | ||
eb59413a | 956 | fs = XNEW (struct file_stack); |
5a8a92a0 | 957 | fs->location = input_location; |
25c66e49 | 958 | fs->next = input_file_stack; |
fdfe4b3f | 959 | #ifdef USE_MAPPED_LOCATION |
960 | input_location = fline; | |
961 | #else | |
62a17411 | 962 | input_filename = file; |
963 | input_line = line; | |
fdfe4b3f | 964 | #endif |
25c66e49 | 965 | input_file_stack = fs; |
966 | input_file_stack_tick++; | |
18a3d34c | 967 | VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack); |
25c66e49 | 968 | } |
969 | ||
970 | /* Pop the top entry off the stack of presently open source files. | |
bca5a169 | 971 | Restore the INPUT_LOCATION from the new topmost entry on the |
972 | stack. */ | |
25c66e49 | 973 | |
974 | void | |
7237deda | 975 | pop_srcloc (void) |
25c66e49 | 976 | { |
977 | struct file_stack *fs; | |
89a75961 | 978 | |
18a3d34c | 979 | gcc_assert (!input_file_stack_restored); |
980 | if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1)) | |
981 | sorry ("GCC supports only %d input file changes", input_file_stack_tick); | |
982 | ||
25c66e49 | 983 | fs = input_file_stack; |
62a17411 | 984 | input_location = fs->location; |
25c66e49 | 985 | input_file_stack = fs->next; |
25c66e49 | 986 | input_file_stack_tick++; |
18a3d34c | 987 | VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack); |
988 | } | |
989 | ||
990 | /* Restore the input file stack to its state as of TICK, for the sake | |
991 | of diagnostics after processing the whole input. Once this has | |
992 | been called, push_srcloc and pop_srcloc may no longer be | |
993 | called. */ | |
994 | void | |
995 | restore_input_file_stack (int tick) | |
996 | { | |
997 | if (tick == 0) | |
998 | input_file_stack = NULL; | |
999 | else | |
1000 | input_file_stack = VEC_index (fs_p, input_file_stack_history, tick - 1); | |
1001 | input_file_stack_tick = tick; | |
1002 | input_file_stack_restored = true; | |
25c66e49 | 1003 | } |
1004 | ||
9ceb1c29 | 1005 | /* Compile an entire translation unit. Write a file of assembly |
1006 | output and various debugging dumps. */ | |
3bcb26d1 | 1007 | |
1008 | static void | |
7237deda | 1009 | compile_file (void) |
3bcb26d1 | 1010 | { |
3bcb26d1 | 1011 | /* Initialize yet another pass. */ |
1012 | ||
121f3051 | 1013 | init_cgraph (); |
b54842d8 | 1014 | init_final (main_input_filename); |
44359ced | 1015 | coverage_init (aux_base_name); |
3bcb26d1 | 1016 | |
74d2af64 | 1017 | timevar_push (TV_PARSE); |
3bcb26d1 | 1018 | |
b78207a0 | 1019 | /* Call the parser, which parses the entire file (calling |
1020 | rest_of_compilation for each function). */ | |
dc24ddbd | 1021 | lang_hooks.parse_file (set_yydebug); |
3bcb26d1 | 1022 | |
d292784c | 1023 | /* In case there were missing block closers, |
1024 | get us back to the global binding level. */ | |
dc24ddbd | 1025 | lang_hooks.clear_binding_stack (); |
3bcb26d1 | 1026 | |
1027 | /* Compilation is now finished except for writing | |
1028 | what's left of the symbol table output. */ | |
74d2af64 | 1029 | timevar_pop (TV_PARSE); |
3bcb26d1 | 1030 | |
15daca6e | 1031 | if (flag_syntax_only) |
cdc9fa3e | 1032 | return; |
a7b7430b | 1033 | |
dc24ddbd | 1034 | lang_hooks.decls.final_write_globals (); |
15daca6e | 1035 | |
1036 | if (errorcount || sorrycount) | |
1037 | return; | |
1038 | ||
1d416bd7 | 1039 | varpool_assemble_pending_decls (); |
d7401838 | 1040 | finish_aliases_2 (); |
229dcfae | 1041 | |
44359ced | 1042 | /* This must occur after the loop to output deferred functions. |
1043 | Else the coverage initializer would not be emitted if all the | |
1044 | functions in this compilation unit were deferred. */ | |
1045 | coverage_finish (); | |
2f22dd9c | 1046 | |
e68ba323 | 1047 | /* Likewise for mudflap static object registrations. */ |
1048 | if (flag_mudflap) | |
1049 | mudflap_finish_file (); | |
1050 | ||
9dda1f80 | 1051 | /* Likewise for emulated thread-local storage. */ |
1052 | if (!targetm.have_tls) | |
1053 | emutls_finish (); | |
1054 | ||
2dbdc48e | 1055 | output_shared_constant_pool (); |
f2d0e9f1 | 1056 | output_object_blocks (); |
1057 | ||
df1c8607 | 1058 | /* Write out any pending weak symbol declarations. */ |
df1c8607 | 1059 | weak_finish (); |
1060 | ||
89a75961 | 1061 | /* Do dbx symbols. */ |
74d2af64 | 1062 | timevar_push (TV_SYMOUT); |
c140b944 | 1063 | |
34986748 | 1064 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
d757b8c9 | 1065 | if (dwarf2out_do_frame ()) |
1066 | dwarf2out_frame_finish (); | |
1067 | #endif | |
1068 | ||
b9b7f8b4 | 1069 | (*debug_hooks->finish) (main_input_filename); |
74d2af64 | 1070 | timevar_pop (TV_SYMOUT); |
be6eb971 | 1071 | |
3bcb26d1 | 1072 | /* Output some stuff at end of file if nec. */ |
1073 | ||
ad5818ae | 1074 | dw2_output_indirect_constants (); |
1075 | ||
44b23e05 | 1076 | /* Flush any pending external directives. */ |
4ffeedd3 | 1077 | process_pending_assemble_externals (); |
1078 | ||
f006a2e6 | 1079 | /* Attach a special .ident directive to the end of the file to identify |
1080 | the version of GCC which compiled this code. The format of the .ident | |
1081 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1082 | #ifdef IDENT_ASM_OP | |
1083 | if (!flag_no_ident) | |
1084 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
1085 | IDENT_ASM_OP, version_string); | |
1086 | #endif | |
5cf09555 | 1087 | |
1088 | /* This must be at the end. Some target ports emit end of file directives | |
1089 | into the assembly file here, and hence we can not output anything to the | |
1090 | assembly file after this point. */ | |
1091 | targetm.asm_out.file_end (); | |
3bcb26d1 | 1092 | } |
03414cfb | 1093 | |
a49a878f | 1094 | /* Parse a -d... command line switch. */ |
3bcb26d1 | 1095 | |
1096 | void | |
a49a878f | 1097 | decode_d_option (const char *arg) |
3bcb26d1 | 1098 | { |
a49a878f | 1099 | int c; |
5b7d4198 | 1100 | |
a49a878f | 1101 | while (*arg) |
1102 | switch (c = *arg++) | |
1103 | { | |
1104 | case 'A': | |
1105 | flag_debug_asm = 1; | |
1106 | break; | |
1107 | case 'p': | |
1108 | flag_print_asm_name = 1; | |
1109 | break; | |
1110 | case 'P': | |
1111 | flag_dump_rtl_in_asm = 1; | |
1112 | flag_print_asm_name = 1; | |
1113 | break; | |
1114 | case 'v': | |
1115 | graph_dump_format = vcg; | |
1116 | break; | |
1117 | case 'x': | |
1118 | rtl_dump_and_exit = 1; | |
1119 | break; | |
1120 | case 'y': | |
1121 | set_yydebug = 1; | |
1122 | break; | |
1123 | case 'D': /* These are handled by the preprocessor. */ | |
1124 | case 'I': | |
1125 | break; | |
1126 | case 'H': | |
1127 | setup_core_dumping(); | |
1128 | break; | |
1129 | ||
1130 | case 'a': | |
1131 | default: | |
1132 | if (!enable_rtl_dump_file (c)) | |
c3ceba8e | 1133 | warning (0, "unrecognized gcc debugging option: %c", c); |
a49a878f | 1134 | break; |
1135 | } | |
3bcb26d1 | 1136 | } |
1137 | ||
a49a878f | 1138 | /* Indexed by enum debug_info_type. */ |
1139 | const char *const debug_type_names[] = | |
3bcb26d1 | 1140 | { |
8eec8aec | 1141 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" |
a49a878f | 1142 | }; |
316bc009 | 1143 | |
a49a878f | 1144 | /* Print version information to FILE. |
1145 | Each line begins with INDENT (for the case where FILE is the | |
1146 | assembler output file). */ | |
9dda7915 | 1147 | |
a49a878f | 1148 | void |
1149 | print_version (FILE *file, const char *indent) | |
9ceb1c29 | 1150 | { |
0a81f5a0 | 1151 | static const char fmt1[] = |
9ceb1c29 | 1152 | #ifdef __GNUC__ |
0a81f5a0 | 1153 | N_("%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n") |
9ceb1c29 | 1154 | #else |
0a81f5a0 | 1155 | N_("%s%s%s version %s (%s) compiled by CC.\n") |
9ceb1c29 | 1156 | #endif |
0a81f5a0 | 1157 | ; |
1158 | static const char fmt2[] = | |
1159 | N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); | |
1160 | #ifndef __VERSION__ | |
1161 | #define __VERSION__ "[?]" | |
1162 | #endif | |
1163 | fprintf (file, | |
1164 | file == stderr ? _(fmt1) : fmt1, | |
1165 | indent, *indent != 0 ? " " : "", | |
9ceb1c29 | 1166 | lang_hooks.name, version_string, TARGET_NAME, |
1167 | indent, __VERSION__); | |
0a81f5a0 | 1168 | fprintf (file, |
1169 | file == stderr ? _(fmt2) : fmt2, | |
e4de0dc0 | 1170 | indent, *indent != 0 ? " " : "", |
1171 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
9ceb1c29 | 1172 | } |
1173 | ||
7c6733e8 | 1174 | #ifdef ASM_COMMENT_START |
1175 | static int | |
1176 | print_to_asm_out_file (print_switch_type type, const char * text) | |
1177 | { | |
1178 | bool prepend_sep = true; | |
1179 | ||
1180 | switch (type) | |
1181 | { | |
1182 | case SWITCH_TYPE_LINE_END: | |
1183 | putc ('\n', asm_out_file); | |
1184 | return 1; | |
1185 | ||
1186 | case SWITCH_TYPE_LINE_START: | |
1187 | fputs (ASM_COMMENT_START, asm_out_file); | |
1188 | return strlen (ASM_COMMENT_START); | |
1189 | ||
1190 | case SWITCH_TYPE_DESCRIPTIVE: | |
1191 | if (ASM_COMMENT_START[0] == 0) | |
1192 | prepend_sep = false; | |
1193 | /* Drop through. */ | |
1194 | case SWITCH_TYPE_PASSED: | |
1195 | case SWITCH_TYPE_ENABLED: | |
1196 | if (prepend_sep) | |
1197 | fputc (' ', asm_out_file); | |
1198 | fprintf (asm_out_file, text); | |
1199 | /* No need to return the length here as | |
1200 | print_single_switch has already done it. */ | |
1201 | return 0; | |
1202 | ||
1203 | default: | |
1204 | return -1; | |
1205 | } | |
1206 | } | |
1207 | #endif | |
1208 | ||
1209 | static int | |
1210 | print_to_stderr (print_switch_type type, const char * text) | |
1211 | { | |
1212 | switch (type) | |
1213 | { | |
1214 | case SWITCH_TYPE_LINE_END: | |
1215 | putc ('\n', stderr); | |
1216 | return 1; | |
1217 | ||
1218 | case SWITCH_TYPE_LINE_START: | |
1219 | return 0; | |
1220 | ||
1221 | case SWITCH_TYPE_PASSED: | |
1222 | case SWITCH_TYPE_ENABLED: | |
1223 | fputc (' ', stderr); | |
1224 | /* Drop through. */ | |
1225 | ||
1226 | case SWITCH_TYPE_DESCRIPTIVE: | |
1227 | fprintf (stderr, text); | |
1228 | /* No need to return the length here as | |
1229 | print_single_switch has already done it. */ | |
1230 | return 0; | |
1231 | ||
1232 | default: | |
1233 | return -1; | |
1234 | } | |
1235 | } | |
1236 | ||
9ceb1c29 | 1237 | /* Print an option value and return the adjusted position in the line. |
7c6733e8 | 1238 | ??? print_fn doesn't handle errors, eg disk full; presumably other |
1239 | code will catch a disk full though. */ | |
9ceb1c29 | 1240 | |
1241 | static int | |
7c6733e8 | 1242 | print_single_switch (print_switch_fn_type print_fn, |
1243 | int pos, | |
1244 | print_switch_type type, | |
1245 | const char * text) | |
9ceb1c29 | 1246 | { |
7c6733e8 | 1247 | /* The ultrix fprintf returns 0 on success, so compute the result |
1248 | we want here since we need it for the following test. The +1 | |
7920eed5 | 1249 | is for the separator character that will probably be emitted. */ |
7c6733e8 | 1250 | int len = strlen (text) + 1; |
9ceb1c29 | 1251 | |
1252 | if (pos != 0 | |
7c6733e8 | 1253 | && pos + len > MAX_LINE) |
9ceb1c29 | 1254 | { |
7c6733e8 | 1255 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1256 | pos = 0; |
1257 | } | |
7c6733e8 | 1258 | |
9ceb1c29 | 1259 | if (pos == 0) |
7c6733e8 | 1260 | pos += print_fn (SWITCH_TYPE_LINE_START, NULL); |
1261 | ||
1262 | print_fn (type, text); | |
1263 | return pos + len; | |
9ceb1c29 | 1264 | } |
1265 | ||
7c6733e8 | 1266 | /* Print active target switches using PRINT_FN. |
9ceb1c29 | 1267 | POS is the current cursor position and MAX is the size of a "line". |
1268 | Each line begins with INDENT and ends with TERM. | |
1269 | Each switch is separated from the next by SEP. */ | |
1270 | ||
1271 | static void | |
7c6733e8 | 1272 | print_switch_values (print_switch_fn_type print_fn) |
9ceb1c29 | 1273 | { |
7c6733e8 | 1274 | int pos = 0; |
9ceb1c29 | 1275 | size_t j; |
4838a8b6 | 1276 | const char **p; |
9ceb1c29 | 1277 | |
eb54bdbd | 1278 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
b80f1d67 | 1279 | that it can be printed below. This helps reproducibility. */ |
1280 | randomize (); | |
eb54bdbd | 1281 | |
9ceb1c29 | 1282 | /* Print the options as passed. */ |
7c6733e8 | 1283 | pos = print_single_switch (print_fn, pos, |
1284 | SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
9ceb1c29 | 1285 | |
1286 | for (p = &save_argv[1]; *p != NULL; p++) | |
7c6733e8 | 1287 | { |
1288 | if (**p == '-') | |
1289 | { | |
1290 | /* Ignore these. */ | |
1291 | if (strcmp (*p, "-o") == 0 | |
1292 | || strcmp (*p, "-dumpbase") == 0 | |
1293 | || strcmp (*p, "-auxbase") == 0) | |
1294 | { | |
1295 | if (p[1] != NULL) | |
1296 | p++; | |
1297 | continue; | |
1298 | } | |
1299 | ||
1300 | if (strcmp (*p, "-quiet") == 0 | |
1301 | || strcmp (*p, "-version") == 0) | |
9ceb1c29 | 1302 | continue; |
7c6733e8 | 1303 | |
1304 | if ((*p)[1] == 'd') | |
1305 | continue; | |
1306 | } | |
1307 | ||
1308 | pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
1309 | } | |
1310 | ||
9ceb1c29 | 1311 | if (pos > 0) |
7c6733e8 | 1312 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1313 | |
1314 | /* Print the -f and -m options that have been enabled. | |
1315 | We don't handle language specific options but printing argv | |
1316 | should suffice. */ | |
7c6733e8 | 1317 | pos = print_single_switch (print_fn, 0, |
1318 | SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
9ceb1c29 | 1319 | |
2e9da478 | 1320 | for (j = 0; j < cl_options_count; j++) |
ff05e09e | 1321 | if ((cl_options[j].flags & CL_REPORT) |
efb9d9ee | 1322 | && option_enabled (j) > 0) |
7c6733e8 | 1323 | pos = print_single_switch (print_fn, pos, |
1324 | SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
9ceb1c29 | 1325 | |
7c6733e8 | 1326 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1327 | } |
03414cfb | 1328 | |
9ceb1c29 | 1329 | /* Open assembly code output file. Do this even if -fsyntax-only is |
1330 | on, because then the driver will have provided the name of a | |
1331 | temporary file or bit bucket for us. NAME is the file specified on | |
1332 | the command line, possibly NULL. */ | |
1333 | static void | |
7237deda | 1334 | init_asm_output (const char *name) |
9ceb1c29 | 1335 | { |
1336 | if (name == NULL && asm_file_name == 0) | |
1337 | asm_out_file = stdout; | |
1338 | else | |
1339 | { | |
1340 | if (asm_file_name == 0) | |
b1157638 | 1341 | { |
1342 | int len = strlen (dump_base_name); | |
eb59413a | 1343 | char *dumpname = XNEWVEC (char, len + 6); |
7c6733e8 | 1344 | |
b1157638 | 1345 | memcpy (dumpname, dump_base_name, len + 1); |
1346 | strip_off_ending (dumpname, len); | |
1347 | strcat (dumpname, ".s"); | |
1348 | asm_file_name = dumpname; | |
1349 | } | |
9ceb1c29 | 1350 | if (!strcmp (asm_file_name, "-")) |
b1157638 | 1351 | asm_out_file = stdout; |
9ceb1c29 | 1352 | else |
62b4d90e | 1353 | asm_out_file = fopen (asm_file_name, "w+b"); |
9ceb1c29 | 1354 | if (asm_out_file == 0) |
eb586f2c | 1355 | fatal_error ("can%'t open %s for writing: %m", asm_file_name); |
9ceb1c29 | 1356 | } |
1357 | ||
9ceb1c29 | 1358 | if (!flag_syntax_only) |
1359 | { | |
92c473b8 | 1360 | targetm.asm_out.file_start (); |
9ceb1c29 | 1361 | |
7c6733e8 | 1362 | if (flag_record_gcc_switches) |
1363 | { | |
1364 | if (targetm.asm_out.record_gcc_switches) | |
1365 | { | |
1366 | /* Let the target know that we are about to start recording. */ | |
1367 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1368 | NULL); | |
1369 | /* Now record the switches. */ | |
1370 | print_switch_values (targetm.asm_out.record_gcc_switches); | |
1371 | /* Let the target know that the recording is over. */ | |
1372 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1373 | NULL); | |
1374 | } | |
1375 | else | |
1376 | inform ("-frecord-gcc-switches is not supported by the current target"); | |
1377 | } | |
1378 | ||
9ceb1c29 | 1379 | #ifdef ASM_COMMENT_START |
1380 | if (flag_verbose_asm) | |
1381 | { | |
7c6733e8 | 1382 | /* Print the list of switches in effect |
1383 | into the assembler file as comments. */ | |
9ceb1c29 | 1384 | print_version (asm_out_file, ASM_COMMENT_START); |
7c6733e8 | 1385 | print_switch_values (print_to_asm_out_file); |
9ceb1c29 | 1386 | fprintf (asm_out_file, "\n"); |
1387 | } | |
1388 | #endif | |
1389 | } | |
1390 | } | |
03414cfb | 1391 | |
7abcc497 | 1392 | /* Return true if the state of option OPTION should be stored in PCH files |
1393 | and checked by default_pch_valid_p. Store the option's current state | |
1394 | in STATE if so. */ | |
1395 | ||
1396 | static inline bool | |
1397 | option_affects_pch_p (int option, struct cl_option_state *state) | |
1398 | { | |
1399 | if ((cl_options[option].flags & CL_TARGET) == 0) | |
1400 | return false; | |
1401 | if (cl_options[option].flag_var == &target_flags) | |
1402 | if (targetm.check_pch_target_flags) | |
1403 | return false; | |
1404 | return get_option_state (option, state); | |
1405 | } | |
1406 | ||
7988d6e2 | 1407 | /* Default version of get_pch_validity. |
1408 | By default, every flag difference is fatal; that will be mostly right for | |
1409 | most targets, but completely right for very few. */ | |
1410 | ||
1411 | void * | |
1412 | default_get_pch_validity (size_t *len) | |
1413 | { | |
7abcc497 | 1414 | struct cl_option_state state; |
7988d6e2 | 1415 | size_t i; |
1416 | char *result, *r; | |
7e614678 | 1417 | |
6c3bc3be | 1418 | *len = 2; |
1419 | if (targetm.check_pch_target_flags) | |
1420 | *len += sizeof (target_flags); | |
7abcc497 | 1421 | for (i = 0; i < cl_options_count; i++) |
1422 | if (option_affects_pch_p (i, &state)) | |
1423 | *len += state.size; | |
7988d6e2 | 1424 | |
eb59413a | 1425 | result = r = XNEWVEC (char, *len); |
7988d6e2 | 1426 | r[0] = flag_pic; |
1427 | r[1] = flag_pie; | |
1428 | r += 2; | |
6c3bc3be | 1429 | if (targetm.check_pch_target_flags) |
7988d6e2 | 1430 | { |
6c3bc3be | 1431 | memcpy (r, &target_flags, sizeof (target_flags)); |
1432 | r += sizeof (target_flags); | |
7988d6e2 | 1433 | } |
6c3bc3be | 1434 | |
7abcc497 | 1435 | for (i = 0; i < cl_options_count; i++) |
1436 | if (option_affects_pch_p (i, &state)) | |
1437 | { | |
1438 | memcpy (r, state.data, state.size); | |
1439 | r += state.size; | |
1440 | } | |
7988d6e2 | 1441 | |
1442 | return result; | |
1443 | } | |
1444 | ||
6c3bc3be | 1445 | /* Return a message which says that a PCH file was created with a different |
1446 | setting of OPTION. */ | |
1447 | ||
1448 | static const char * | |
1449 | pch_option_mismatch (const char *option) | |
1450 | { | |
1451 | char *r; | |
1452 | ||
1453 | asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
1454 | if (r == NULL) | |
1455 | return _("out of memory"); | |
1456 | return r; | |
1457 | } | |
1458 | ||
7988d6e2 | 1459 | /* Default version of pch_valid_p. */ |
1460 | ||
1461 | const char * | |
1462 | default_pch_valid_p (const void *data_p, size_t len) | |
1463 | { | |
7abcc497 | 1464 | struct cl_option_state state; |
7988d6e2 | 1465 | const char *data = (const char *)data_p; |
7988d6e2 | 1466 | size_t i; |
7e614678 | 1467 | |
7988d6e2 | 1468 | /* -fpic and -fpie also usually make a PCH invalid. */ |
1469 | if (data[0] != flag_pic) | |
1470 | return _("created and used with different settings of -fpic"); | |
1471 | if (data[1] != flag_pie) | |
1472 | return _("created and used with different settings of -fpie"); | |
1473 | data += 2; | |
1474 | ||
1475 | /* Check target_flags. */ | |
761d9126 | 1476 | if (targetm.check_pch_target_flags) |
1477 | { | |
6c3bc3be | 1478 | int tf; |
1479 | const char *r; | |
1480 | ||
1481 | memcpy (&tf, data, sizeof (target_flags)); | |
1482 | data += sizeof (target_flags); | |
1483 | len -= sizeof (target_flags); | |
1484 | r = targetm.check_pch_target_flags (tf); | |
761d9126 | 1485 | if (r != NULL) |
1486 | return r; | |
1487 | } | |
7988d6e2 | 1488 | |
7abcc497 | 1489 | for (i = 0; i < cl_options_count; i++) |
1490 | if (option_affects_pch_p (i, &state)) | |
1491 | { | |
1492 | if (memcmp (data, state.data, state.size) != 0) | |
6c3bc3be | 1493 | return pch_option_mismatch (cl_options[i].opt_text); |
7abcc497 | 1494 | data += state.size; |
1495 | len -= state.size; | |
1496 | } | |
1497 | ||
7988d6e2 | 1498 | return NULL; |
7988d6e2 | 1499 | } |
1500 | ||
aa6db498 | 1501 | /* Default tree printer. Handles declarations only. */ |
1502 | static bool | |
c907c5b1 | 1503 | default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, |
3cf8b391 | 1504 | int precision, bool wide, bool set_locus, bool hash) |
aa6db498 | 1505 | { |
9366434c | 1506 | tree t; |
1507 | ||
c907c5b1 | 1508 | /* FUTURE: %+x should set the locus. */ |
3cf8b391 | 1509 | if (precision != 0 || wide || hash) |
c907c5b1 | 1510 | return false; |
1511 | ||
1512 | switch (*spec) | |
aa6db498 | 1513 | { |
1514 | case 'D': | |
9366434c | 1515 | t = va_arg (*text->args_ptr, tree); |
8bc1e6ff | 1516 | if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) |
9366434c | 1517 | t = DECL_DEBUG_EXPR (t); |
1518 | break; | |
1519 | ||
aa6db498 | 1520 | case 'F': |
1521 | case 'T': | |
9366434c | 1522 | t = va_arg (*text->args_ptr, tree); |
1523 | break; | |
aa6db498 | 1524 | |
1525 | default: | |
1526 | return false; | |
1527 | } | |
9366434c | 1528 | |
3cf8b391 | 1529 | if (set_locus && text->locus) |
1530 | *text->locus = DECL_SOURCE_LOCATION (t); | |
1531 | ||
9366434c | 1532 | if (DECL_P (t)) |
1533 | { | |
1534 | const char *n = DECL_NAME (t) | |
1535 | ? lang_hooks.decl_printable_name (t, 2) | |
1536 | : "<anonymous>"; | |
1537 | pp_string (pp, n); | |
1538 | } | |
1539 | else | |
1540 | dump_generic_node (pp, t, 0, 0, 0); | |
1541 | ||
1542 | return true; | |
aa6db498 | 1543 | } |
1544 | ||
9ceb1c29 | 1545 | /* Initialization of the front end environment, before command line |
1546 | options are parsed. Signal handlers, internationalization etc. | |
1547 | ARGV0 is main's argv[0]. */ | |
1548 | static void | |
4838a8b6 | 1549 | general_init (const char *argv0) |
9ceb1c29 | 1550 | { |
4838a8b6 | 1551 | const char *p; |
9ceb1c29 | 1552 | |
1553 | p = argv0 + strlen (argv0); | |
1554 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
1555 | --p; | |
1556 | progname = p; | |
1557 | ||
1558 | xmalloc_set_program_name (progname); | |
6deeea15 | 1559 | |
77e1a5df | 1560 | hex_init (); |
1561 | ||
4367c81f | 1562 | /* Unlock the stdio streams. */ |
9c8f076b | 1563 | unlock_std_streams (); |
4367c81f | 1564 | |
eb718689 | 1565 | gcc_init_libintl (); |
be2828ce | 1566 | |
aa6db498 | 1567 | /* Initialize the diagnostics reporting machinery, so option parsing |
1568 | can give warnings and errors. */ | |
1569 | diagnostic_initialize (global_dc); | |
1570 | /* Set a default printer. Language specific initializations will | |
1571 | override it later. */ | |
1572 | pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
1573 | ||
b9b90cce | 1574 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
1575 | #ifdef SIGSEGV | |
1576 | signal (SIGSEGV, crash_signal); | |
004cf1e3 | 1577 | #endif |
b9b90cce | 1578 | #ifdef SIGILL |
1579 | signal (SIGILL, crash_signal); | |
1580 | #endif | |
1581 | #ifdef SIGBUS | |
1582 | signal (SIGBUS, crash_signal); | |
1583 | #endif | |
1584 | #ifdef SIGABRT | |
1585 | signal (SIGABRT, crash_signal); | |
1586 | #endif | |
1587 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
1588 | signal (SIGIOT, crash_signal); | |
1589 | #endif | |
536f5fb1 | 1590 | #ifdef SIGFPE |
1591 | signal (SIGFPE, crash_signal); | |
1592 | #endif | |
89a75961 | 1593 | |
b197fbcf | 1594 | /* Other host-specific signal setup. */ |
1595 | (*host_hooks.extra_signals)(); | |
1596 | ||
5934ea7a | 1597 | /* Initialize the garbage-collector, string pools and tree type hash |
1598 | table. */ | |
1599 | init_ggc (); | |
1600 | init_stringpool (); | |
ceec9c13 | 1601 | linemap_init (&line_table); |
5934ea7a | 1602 | init_ttree (); |
262444a6 | 1603 | |
9ceb1c29 | 1604 | /* Initialize register usage now so switches may override. */ |
1605 | init_reg_sets (); | |
990339dd | 1606 | |
9a33a2e8 | 1607 | /* Register the language-independent parameters. */ |
1608 | add_params (lang_independent_params, LAST_PARAM); | |
1609 | ||
7d83df95 | 1610 | /* This must be done after add_params but before argument processing. */ |
1611 | init_ggc_heuristics(); | |
77fce4cd | 1612 | init_optimization_passes (); |
5764e93a | 1613 | } |
03414cfb | 1614 | |
f2d0e9f1 | 1615 | /* Return true if the current target supports -fsection-anchors. */ |
1616 | ||
1617 | static bool | |
1618 | target_supports_section_anchors_p (void) | |
1619 | { | |
1620 | if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
1621 | return false; | |
1622 | ||
1623 | if (targetm.asm_out.output_anchor == NULL) | |
1624 | return false; | |
1625 | ||
1626 | return true; | |
1627 | } | |
1628 | ||
5764e93a | 1629 | /* Process the options that have been parsed. */ |
1630 | static void | |
7237deda | 1631 | process_options (void) |
5764e93a | 1632 | { |
0c5e3a3d | 1633 | /* Just in case lang_hooks.post_options ends up calling a debug_hook. |
1634 | This can happen with incorrect pre-processed input. */ | |
1635 | debug_hooks = &do_nothing_debug_hooks; | |
1636 | ||
03bde601 | 1637 | /* Allow the front end to perform consistency checks and do further |
1638 | initialization based on the command line options. This hook also | |
1639 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
1640 | so we can correctly initialize debug output. */ | |
dc24ddbd | 1641 | no_backend = lang_hooks.post_options (&main_input_filename); |
fdfe4b3f | 1642 | #ifndef USE_MAPPED_LOCATION |
3272db82 | 1643 | input_filename = main_input_filename; |
fdfe4b3f | 1644 | #endif |
03bde601 | 1645 | |
3bcb26d1 | 1646 | #ifdef OVERRIDE_OPTIONS |
1647 | /* Some machines may reject certain combinations of options. */ | |
1648 | OVERRIDE_OPTIONS; | |
1649 | #endif | |
1650 | ||
f2d0e9f1 | 1651 | if (flag_section_anchors && !target_supports_section_anchors_p ()) |
1652 | { | |
1653 | warning (OPT_fsection_anchors, | |
1654 | "this target does not support %qs", "-fsection-anchors"); | |
1655 | flag_section_anchors = 0; | |
1656 | } | |
1657 | ||
5bf3fee3 | 1658 | if (flag_short_enums == 2) |
1659 | flag_short_enums = targetm.default_short_enums (); | |
1660 | ||
a766fb27 | 1661 | /* Set aux_base_name if not already set. */ |
1662 | if (aux_base_name) | |
1663 | ; | |
3272db82 | 1664 | else if (main_input_filename) |
a766fb27 | 1665 | { |
3272db82 | 1666 | char *name = xstrdup (lbasename (main_input_filename)); |
7237deda | 1667 | |
a766fb27 | 1668 | strip_off_ending (name, strlen (name)); |
1669 | aux_base_name = name; | |
1670 | } | |
1671 | else | |
1672 | aux_base_name = "gccaux"; | |
1673 | ||
61e95947 | 1674 | /* Set up the align_*_log variables, defaulting them to 1 if they |
1675 | were still unset. */ | |
1676 | if (align_loops <= 0) align_loops = 1; | |
93429286 | 1677 | if (align_loops_max_skip > align_loops || !align_loops) |
1678 | align_loops_max_skip = align_loops - 1; | |
89a75961 | 1679 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
61e95947 | 1680 | if (align_jumps <= 0) align_jumps = 1; |
93429286 | 1681 | if (align_jumps_max_skip > align_jumps || !align_jumps) |
1682 | align_jumps_max_skip = align_jumps - 1; | |
89a75961 | 1683 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
61e95947 | 1684 | if (align_labels <= 0) align_labels = 1; |
89a75961 | 1685 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
93429286 | 1686 | if (align_labels_max_skip > align_labels || !align_labels) |
1687 | align_labels_max_skip = align_labels - 1; | |
61e95947 | 1688 | if (align_functions <= 0) align_functions = 1; |
89a75961 | 1689 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
1690 | ||
3bcb26d1 | 1691 | /* Unrolling all loops implies that standard loop unrolling must also |
1692 | be done. */ | |
1693 | if (flag_unroll_all_loops) | |
1694 | flag_unroll_loops = 1; | |
ce32fe65 | 1695 | |
90f1c563 | 1696 | /* The loop unrolling code assumes that cse will be run after loop. |
472cd78a | 1697 | web and rename-registers also help when run after loop unrolling. */ |
1698 | ||
1699 | if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
1700 | flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
1701 | if (flag_web == AUTODETECT_VALUE) | |
1702 | flag_web = flag_unroll_loops || flag_peel_loops; | |
1703 | if (flag_rename_registers == AUTODETECT_VALUE) | |
1704 | flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
3bcb26d1 | 1705 | |
9645fa4f | 1706 | if (flag_non_call_exceptions) |
1707 | flag_asynchronous_unwind_tables = 1; | |
1708 | if (flag_asynchronous_unwind_tables) | |
1709 | flag_unwind_tables = 1; | |
1710 | ||
833eb724 | 1711 | /* Disable unit-at-a-time mode for frontends not supporting callgraph |
1712 | interface. */ | |
1713 | if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function) | |
1714 | flag_unit_at_a_time = 0; | |
1715 | ||
f2d0e9f1 | 1716 | if (!flag_unit_at_a_time) |
1717 | flag_section_anchors = 0; | |
1718 | ||
1c6a7b8c | 1719 | if (flag_value_profile_transformations) |
1720 | flag_profile_values = 1; | |
1721 | ||
3bcb26d1 | 1722 | /* Warn about options that are not supported on this machine. */ |
1723 | #ifndef INSN_SCHEDULING | |
1724 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
c3ceba8e | 1725 | warning (0, "instruction scheduling not supported on this target machine"); |
3bcb26d1 | 1726 | #endif |
1727 | #ifndef DELAY_SLOTS | |
1728 | if (flag_delayed_branch) | |
c3ceba8e | 1729 | warning (0, "this target machine does not have delayed branches"); |
3bcb26d1 | 1730 | #endif |
1731 | ||
95c4b02a | 1732 | user_label_prefix = USER_LABEL_PREFIX; |
1733 | if (flag_leading_underscore != -1) | |
1734 | { | |
89a75961 | 1735 | /* If the default prefix is more complicated than "" or "_", |
95c4b02a | 1736 | issue a warning and ignore this option. */ |
1737 | if (user_label_prefix[0] == 0 || | |
1738 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
1739 | { | |
1740 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
1741 | } | |
1742 | else | |
c3ceba8e | 1743 | warning (0, "-f%sleading-underscore not supported on this target machine", |
95c4b02a | 1744 | flag_leading_underscore ? "" : "no-"); |
1745 | } | |
1746 | ||
3bcb26d1 | 1747 | /* If we are in verbose mode, write out the version and maybe all the |
1748 | option flags in use. */ | |
1749 | if (version_flag) | |
1750 | { | |
e87e2aa9 | 1751 | print_version (stderr, ""); |
3bcb26d1 | 1752 | if (! quiet_flag) |
7c6733e8 | 1753 | print_switch_values (print_to_stderr); |
3bcb26d1 | 1754 | } |
1755 | ||
9ceb1c29 | 1756 | if (flag_syntax_only) |
1757 | { | |
1758 | write_symbols = NO_DEBUG; | |
1759 | profile_flag = 0; | |
9ceb1c29 | 1760 | } |
3bcb26d1 | 1761 | |
b0e56fb1 | 1762 | /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
1763 | level is 0. */ | |
1764 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1765 | write_symbols = NO_DEBUG; | |
1766 | ||
9ceb1c29 | 1767 | /* Now we know write_symbols, set up the debug hooks based on it. |
1768 | By default we do nothing for debug output. */ | |
ad469377 | 1769 | if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) |
1770 | default_debug_hooks = &do_nothing_debug_hooks; | |
1771 | #if defined(DBX_DEBUGGING_INFO) | |
1772 | else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
1773 | default_debug_hooks = &dbx_debug_hooks; | |
1774 | #endif | |
1775 | #if defined(XCOFF_DEBUGGING_INFO) | |
1776 | else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
1777 | default_debug_hooks = &xcoff_debug_hooks; | |
1778 | #endif | |
1779 | #ifdef SDB_DEBUGGING_INFO | |
1780 | else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
1781 | default_debug_hooks = &sdb_debug_hooks; | |
1782 | #endif | |
1783 | #ifdef DWARF2_DEBUGGING_INFO | |
1784 | else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
1785 | default_debug_hooks = &dwarf2_debug_hooks; | |
1786 | #endif | |
1787 | #ifdef VMS_DEBUGGING_INFO | |
1788 | else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
1789 | || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
1790 | default_debug_hooks = &vmsdbg_debug_hooks; | |
1791 | #endif | |
1792 | ||
b0e56fb1 | 1793 | if (write_symbols == NO_DEBUG) |
8b7af0c0 | 1794 | ; |
9ceb1c29 | 1795 | #if defined(DBX_DEBUGGING_INFO) |
b0e56fb1 | 1796 | else if (write_symbols == DBX_DEBUG) |
9ceb1c29 | 1797 | debug_hooks = &dbx_debug_hooks; |
3bcb26d1 | 1798 | #endif |
9ceb1c29 | 1799 | #if defined(XCOFF_DEBUGGING_INFO) |
b0e56fb1 | 1800 | else if (write_symbols == XCOFF_DEBUG) |
9ceb1c29 | 1801 | debug_hooks = &xcoff_debug_hooks; |
e87e2aa9 | 1802 | #endif |
9ceb1c29 | 1803 | #ifdef SDB_DEBUGGING_INFO |
b0e56fb1 | 1804 | else if (write_symbols == SDB_DEBUG) |
9ceb1c29 | 1805 | debug_hooks = &sdb_debug_hooks; |
1806 | #endif | |
9ceb1c29 | 1807 | #ifdef DWARF2_DEBUGGING_INFO |
b0e56fb1 | 1808 | else if (write_symbols == DWARF2_DEBUG) |
9ceb1c29 | 1809 | debug_hooks = &dwarf2_debug_hooks; |
e87e2aa9 | 1810 | #endif |
8d60d2bc | 1811 | #ifdef VMS_DEBUGGING_INFO |
b0e56fb1 | 1812 | else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
8d60d2bc | 1813 | debug_hooks = &vmsdbg_debug_hooks; |
1814 | #endif | |
b0e56fb1 | 1815 | else |
1816 | error ("target system does not support the \"%s\" debug format", | |
1817 | debug_type_names[write_symbols]); | |
3bcb26d1 | 1818 | |
5923a5e7 | 1819 | /* Now we know which debug output will be used so we can set |
62434574 | 1820 | flag_var_tracking, flag_rename_registers if the user has |
ad469377 | 1821 | not specified them. */ |
1822 | if (debug_info_level < DINFO_LEVEL_NORMAL | |
1823 | || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
5923a5e7 | 1824 | { |
ad469377 | 1825 | if (flag_var_tracking == 1) |
1826 | { | |
1827 | if (debug_info_level < DINFO_LEVEL_NORMAL) | |
c3ceba8e | 1828 | warning (0, "variable tracking requested, but useless unless " |
ad469377 | 1829 | "producing debug info"); |
1830 | else | |
c3ceba8e | 1831 | warning (0, "variable tracking requested, but not supported " |
ad469377 | 1832 | "by this debug format"); |
1833 | } | |
1834 | flag_var_tracking = 0; | |
5923a5e7 | 1835 | } |
1836 | ||
472cd78a | 1837 | if (flag_rename_registers == AUTODETECT_VALUE) |
ad469377 | 1838 | flag_rename_registers = default_debug_hooks->var_location |
1839 | != do_nothing_debug_hooks.var_location; | |
1840 | ||
472cd78a | 1841 | if (flag_var_tracking == AUTODETECT_VALUE) |
ad469377 | 1842 | flag_var_tracking = optimize >= 1; |
1843 | ||
9ceb1c29 | 1844 | /* If auxiliary info generation is desired, open the output file. |
1845 | This goes in the same directory as the source file--unlike | |
1846 | all the other output files. */ | |
1847 | if (flag_gen_aux_info) | |
1848 | { | |
1849 | aux_info_file = fopen (aux_info_file_name, "w"); | |
1850 | if (aux_info_file == 0) | |
eb586f2c | 1851 | fatal_error ("can%'t open %s: %m", aux_info_file_name); |
9ceb1c29 | 1852 | } |
56a44361 | 1853 | |
9ceb1c29 | 1854 | if (! targetm.have_named_sections) |
3bcb26d1 | 1855 | { |
9ceb1c29 | 1856 | if (flag_function_sections) |
1857 | { | |
c3ceba8e | 1858 | warning (0, "-ffunction-sections not supported for this target"); |
9ceb1c29 | 1859 | flag_function_sections = 0; |
1860 | } | |
1861 | if (flag_data_sections) | |
1862 | { | |
c3ceba8e | 1863 | warning (0, "-fdata-sections not supported for this target"); |
9ceb1c29 | 1864 | flag_data_sections = 0; |
1865 | } | |
3bcb26d1 | 1866 | } |
9ceb1c29 | 1867 | |
644a1400 | 1868 | if (flag_function_sections && profile_flag) |
e87e2aa9 | 1869 | { |
c3ceba8e | 1870 | warning (0, "-ffunction-sections disabled; it makes profiling impossible"); |
9ceb1c29 | 1871 | flag_function_sections = 0; |
e87e2aa9 | 1872 | } |
9ceb1c29 | 1873 | |
ba38e12b | 1874 | #ifndef HAVE_prefetch |
1875 | if (flag_prefetch_loop_arrays) | |
1876 | { | |
c3ceba8e | 1877 | warning (0, "-fprefetch-loop-arrays not supported for this target"); |
ba38e12b | 1878 | flag_prefetch_loop_arrays = 0; |
1879 | } | |
1880 | #else | |
1881 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
1882 | { | |
c3ceba8e | 1883 | warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); |
ba38e12b | 1884 | flag_prefetch_loop_arrays = 0; |
1885 | } | |
1886 | #endif | |
1887 | ||
9544445b | 1888 | /* This combination of options isn't handled for i386 targets and doesn't |
1889 | make much sense anyway, so don't allow it. */ | |
1890 | if (flag_prefetch_loop_arrays && optimize_size) | |
1891 | { | |
c3ceba8e | 1892 | warning (0, "-fprefetch-loop-arrays is not supported with -Os"); |
9544445b | 1893 | flag_prefetch_loop_arrays = 0; |
1894 | } | |
1895 | ||
9ceb1c29 | 1896 | #ifndef OBJECT_FORMAT_ELF |
61025e42 | 1897 | #ifndef OBJECT_FORMAT_MACHO |
9ceb1c29 | 1898 | if (flag_function_sections && write_symbols != NO_DEBUG) |
c3ceba8e | 1899 | warning (0, "-ffunction-sections may affect debugging on some targets"); |
61025e42 | 1900 | #endif |
9ceb1c29 | 1901 | #endif |
0a8176f3 | 1902 | |
4ee9c684 | 1903 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ |
1904 | if (flag_signaling_nans) | |
1905 | flag_trapping_math = 1; | |
45b9d334 | 1906 | |
1907 | /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ | |
1908 | if (flag_cx_limited_range) | |
1909 | flag_complex_method = 0; | |
f1a0edff | 1910 | |
f1a0edff | 1911 | /* Targets must be able to place spill slots at lower addresses. If the |
1912 | target already uses a soft frame pointer, the transition is trivial. */ | |
3837145e | 1913 | if (!FRAME_GROWS_DOWNWARD && flag_stack_protect) |
f1a0edff | 1914 | { |
1915 | warning (0, "-fstack-protector not supported for this target"); | |
1916 | flag_stack_protect = 0; | |
1917 | } | |
f1a0edff | 1918 | if (!flag_stack_protect) |
1919 | warn_stack_protect = 0; | |
77ff57c8 | 1920 | |
1921 | /* ??? Unwind info is not correct around the CFG unless either a frame | |
1922 | pointer is present or A_O_A is set. Fixing this requires rewriting | |
1923 | unwind info generation to be aware of the CFG and propagating states | |
1924 | around edges. */ | |
1925 | if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS | |
1926 | && flag_omit_frame_pointer) | |
1927 | { | |
1928 | warning (0, "unwind tables currently requires a frame pointer " | |
1929 | "for correctness"); | |
1930 | flag_omit_frame_pointer = 0; | |
1931 | } | |
3bcb26d1 | 1932 | } |
03414cfb | 1933 | |
5934ea7a | 1934 | /* Initialize the compiler back end. */ |
9ceb1c29 | 1935 | static void |
7237deda | 1936 | backend_init (void) |
9ceb1c29 | 1937 | { |
9ceb1c29 | 1938 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
1939 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
8d60d2bc | 1940 | #ifdef VMS_DEBUGGING_INFO |
2358393e | 1941 | /* Enable line number info for traceback. */ |
8d60d2bc | 1942 | || debug_info_level > DINFO_LEVEL_NONE |
1943 | #endif | |
873f1e89 | 1944 | || flag_test_coverage); |
c235b58a | 1945 | |
a87cf6e5 | 1946 | init_rtlanal (); |
c235b58a | 1947 | init_regs (); |
90295bd2 | 1948 | init_fake_stack_mems (); |
9ceb1c29 | 1949 | init_alias_once (); |
bc8bb825 | 1950 | init_inline_once (); |
9ceb1c29 | 1951 | init_reload (); |
9ceb1c29 | 1952 | init_varasm_once (); |
9ceb1c29 | 1953 | |
1954 | /* The following initialization functions need to generate rtl, so | |
1955 | provide a dummy function context for them. */ | |
1956 | init_dummy_function_start (); | |
1957 | init_expmed (); | |
9ceb1c29 | 1958 | if (flag_caller_saves) |
1959 | init_caller_save (); | |
1960 | expand_dummy_function_end (); | |
1961 | } | |
03414cfb | 1962 | |
f712a0dc | 1963 | /* Language-dependent initialization. Returns nonzero on success. */ |
cdc9fa3e | 1964 | static int |
7237deda | 1965 | lang_dependent_init (const char *name) |
3bcb26d1 | 1966 | { |
fdfe4b3f | 1967 | location_t save_loc = input_location; |
9ceb1c29 | 1968 | if (dump_base_name == 0) |
0f9005dd | 1969 | dump_base_name = name && name[0] ? name : "gccdump"; |
da980a43 | 1970 | |
03bde601 | 1971 | /* Other front-end initialization. */ |
fdfe4b3f | 1972 | #ifdef USE_MAPPED_LOCATION |
1973 | input_location = BUILTINS_LOCATION; | |
1974 | #else | |
1975 | input_filename = "<built-in>"; | |
1976 | input_line = 0; | |
1977 | #endif | |
dc24ddbd | 1978 | if (lang_hooks.init () == 0) |
cdc9fa3e | 1979 | return 0; |
fdfe4b3f | 1980 | input_location = save_loc; |
3bcb26d1 | 1981 | |
9ceb1c29 | 1982 | init_asm_output (name); |
e87e2aa9 | 1983 | |
9ceb1c29 | 1984 | /* These create various _DECL nodes, so need to be called after the |
1985 | front end is initialized. */ | |
1986 | init_eh (); | |
1987 | init_optabs (); | |
c90349fa | 1988 | |
1989 | /* The following initialization functions need to generate rtl, so | |
1990 | provide a dummy function context for them. */ | |
1991 | init_dummy_function_start (); | |
7a5749cc | 1992 | init_expr_once (); |
7a9ae52e | 1993 | |
1994 | /* Although the actions of init_set_costs are language-independent, | |
1995 | it uses optabs, so we cannot call it from backend_init. */ | |
1996 | init_set_costs (); | |
1997 | ||
c90349fa | 1998 | expand_dummy_function_end (); |
e87e2aa9 | 1999 | |
9ceb1c29 | 2000 | /* If dbx symbol table desired, initialize writing it and output the |
2001 | predefined types. */ | |
2002 | timevar_push (TV_SYMOUT); | |
3bcb26d1 | 2003 | |
34986748 | 2004 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
9ceb1c29 | 2005 | if (dwarf2out_do_frame ()) |
2006 | dwarf2out_frame_init (); | |
2007 | #endif | |
3bcb26d1 | 2008 | |
9ceb1c29 | 2009 | /* Now we have the correct original filename, we can initialize |
2010 | debug output. */ | |
2011 | (*debug_hooks->init) (name); | |
3bcb26d1 | 2012 | |
9ceb1c29 | 2013 | timevar_pop (TV_SYMOUT); |
cdc9fa3e | 2014 | |
2015 | return 1; | |
2016 | } | |
03414cfb | 2017 | |
51949610 | 2018 | void |
2019 | dump_memory_report (bool final) | |
2020 | { | |
2021 | ggc_print_statistics (); | |
2022 | stringpool_statistics (); | |
2023 | dump_tree_statistics (); | |
2024 | dump_rtx_statistics (); | |
2025 | dump_varray_statistics (); | |
2026 | dump_alloc_pool_statistics (); | |
2027 | dump_bitmap_statistics (); | |
2028 | dump_ggc_loc_statistics (final); | |
2029 | } | |
2030 | ||
cdc9fa3e | 2031 | /* Clean up: close opened files, etc. */ |
2032 | ||
2033 | static void | |
7237deda | 2034 | finalize (void) |
cdc9fa3e | 2035 | { |
2036 | /* Close the dump files. */ | |
2037 | if (flag_gen_aux_info) | |
2038 | { | |
2039 | fclose (aux_info_file); | |
2040 | if (errorcount) | |
2041 | unlink (aux_info_file_name); | |
2042 | } | |
2043 | ||
2044 | /* Close non-debugging input and output files. Take special care to note | |
2045 | whether fclose returns an error, since the pages might still be on the | |
2046 | buffer chain while the file is open. */ | |
2047 | ||
2048 | if (asm_out_file) | |
2049 | { | |
2050 | if (ferror (asm_out_file) != 0) | |
d07c9932 | 2051 | fatal_error ("error writing to %s: %m", asm_file_name); |
cdc9fa3e | 2052 | if (fclose (asm_out_file) != 0) |
d07c9932 | 2053 | fatal_error ("error closing %s: %m", asm_file_name); |
cdc9fa3e | 2054 | } |
2055 | ||
a49a878f | 2056 | finish_optimization_passes (); |
cdc9fa3e | 2057 | |
2058 | if (mem_report) | |
51949610 | 2059 | dump_memory_report (true); |
cdc9fa3e | 2060 | |
2061 | /* Free up memory for the benefit of leak detectors. */ | |
2062 | free_reg_info (); | |
2063 | ||
2064 | /* Language-specific end of compilation actions. */ | |
dc24ddbd | 2065 | lang_hooks.finish (); |
9ceb1c29 | 2066 | } |
03414cfb | 2067 | |
435fb09b | 2068 | /* Initialize the compiler, and compile the input file. */ |
2069 | static void | |
7237deda | 2070 | do_compile (void) |
9ceb1c29 | 2071 | { |
9a35b648 | 2072 | /* Initialize timing first. The C front ends read the main file in |
2073 | the post_options hook, and C++ does file timings. */ | |
2074 | if (time_report || !quiet_flag || flag_detailed_statistics) | |
2075 | timevar_init (); | |
cd7fc18a | 2076 | timevar_start (TV_TOTAL); |
2077 | ||
9a35b648 | 2078 | process_options (); |
2079 | ||
2080 | /* Don't do any more if an error has already occurred. */ | |
2081 | if (!errorcount) | |
2082 | { | |
2b4ca870 | 2083 | /* This must be run always, because it is needed to compute the FP |
2084 | predefined macros, such as __LDBL_MAX__, for targets using non | |
2085 | default FP formats. */ | |
2086 | init_adjust_machine_modes (); | |
2087 | ||
9a35b648 | 2088 | /* Set up the back-end if requested. */ |
2089 | if (!no_backend) | |
2090 | backend_init (); | |
9ceb1c29 | 2091 | |
9a35b648 | 2092 | /* Language-dependent initialization. Returns true on success. */ |
3272db82 | 2093 | if (lang_dependent_init (main_input_filename)) |
a49a878f | 2094 | compile_file (); |
f79b6507 | 2095 | |
9a35b648 | 2096 | finalize (); |
2097 | } | |
9ceb1c29 | 2098 | |
2099 | /* Stop timing and print the times. */ | |
2100 | timevar_stop (TV_TOTAL); | |
2101 | timevar_print (stderr); | |
435fb09b | 2102 | } |
03414cfb | 2103 | |
435fb09b | 2104 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
435fb09b | 2105 | Exit code is FATAL_EXIT_CODE if can't open files or if there were |
2106 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
2107 | ||
2108 | It is not safe to call this function more than once. */ | |
2109 | ||
2110 | int | |
4838a8b6 | 2111 | toplev_main (unsigned int argc, const char **argv) |
435fb09b | 2112 | { |
4838a8b6 | 2113 | save_argv = argv; |
2114 | ||
435fb09b | 2115 | /* Initialization of GCC's environment, and diagnostics. */ |
b1157638 | 2116 | general_init (argv[0]); |
435fb09b | 2117 | |
2118 | /* Parse the options and do minimal processing; basically just | |
2119 | enough to default flags appropriately. */ | |
f5d971c5 | 2120 | decode_options (argc, argv); |
435fb09b | 2121 | |
b80f1d67 | 2122 | randomize (); |
2123 | ||
435fb09b | 2124 | /* Exit early if we can (e.g. -help). */ |
5934ea7a | 2125 | if (!exit_after_options) |
9a35b648 | 2126 | do_compile (); |
9ceb1c29 | 2127 | |
2128 | if (errorcount || sorrycount) | |
2129 | return (FATAL_EXIT_CODE); | |
2130 | ||
2131 | return (SUCCESS_EXIT_CODE); | |
3bcb26d1 | 2132 | } |